Table 3.

The main features for selecting a pulse rate sensor.

Feature	Selection Criteria
Accuracy and reliability	The sensor should provide accurate and reliable pulse rate readings, as any inaccuracies can lead to incorrect diagnosis or treatment.
Signal quality	The sensor should produce a clear, high-quality signal that medical professionals or automated systems can easily interpret.
Comfort and usability	Consider the comfort of the sensor for the patient, as they may need to wear it for an extended period. Look for sensors that are non-intrusive, lightweight, and easy to use.
Sensing technology	Different sensing technologies are available, such as photoplethysmography (PPG), electrocardiography (ECG), or ballistocardiograph (BCG). Based on the specific needs of the application, suitable technology is chosen.
Compatibility	Ensure the sensor is compatible with the intended medical device or system. This includes interface compatibility, data communication protocols, and power requirements.
Environmental considerations	Evaluate the intended use environment, such as temperature, moisture, or electromagnetic interference, to ensure the sensor can withstand and perform well in such conditions.
Cost	Consider the cost implications, as medical sensors can vary in price. Balance the required features and performance with the available budget.
Regulatory compliance	Ensure that the selected sensor meets the necessary medical device regulations and certifications, such as FDA approval or CE marking, depending on the use region.